Are there ninety-nine teachers in their school 比如这句there are some chairs in the room 可以改成there“t any chairs in the room 刚刚那句怎么改你这是做否定句，在there be句型中一般在is/are后加not.There are some chairs in the room ------There aren't any chairs in the room.做一般疑问句时，这是将is/are提前到句首。There are some chairs in the room ----Are there any chairs in the room?there is some water on the floor 也是一样的，怎么改There isn't any water on the floor.Is there any water on the floor?